7 Airworthiness Directives: 5 airplane, 2 rotorcraft.
AD 48-17-02 · published 1948
Martin-Marietta Corporation Airplanes
AD 48-18-03 · published 1948
Lockheed Aircraft Corporation Airplanes
AD 48-18-04 · published 1948
Lockheed Aircraft Corporation Airplanes
AD 48-17-03 · published 1948
Sikorsky Aircraft Corporation Helicopters
AD 48-18-02 · published 1948
Sikorsky Aircraft Corporation Helicopters
